Fuel pressure testing

[Mrkentee]

(06-22-2020 )Signature620 Wrote:  If the pressure is within specs and it starts/runs fine then the gear pump is OK.

What problem are you trying to solve here?

I had 3 momentary low pressure cel’s at very low speeds about 100 hours apart. I replaced the fuel pressure sensor. Last week I had 2 momentary pressure differential cel’s in the same day.
Haven’t had any since. Just trying to find a problem before I get stuck somewhere. Thinking maybe pump is acting up. Possibly pressure regulators, or shut off valve??